.profile-layout {
      display: flex; gap: 24px; align-items: flex-start;
    }
    .profile-sidebar-nav {
      width: 220px; flex-shrink: 0;
      background: var(--surface);
      border: 1px solid var(--border);
      border-radius: var(--r-xl);
      overflow: hidden;
      position: sticky; top: calc(var(--nav-h) + 16px);
    }
    .profile-avatar-section {
      padding: 24px 20px;
      text-align: center;
      border-bottom: 1px solid var(--border);
      background: linear-gradient(180deg, rgba(75,124,255,.08), transparent);
    }
    .profile-avatar-img {
      width: 72px; height: 72px; border-radius: 50%;
      object-fit: cover;
      border: 3px solid var(--primary);
      margin: 0 auto 10px;
      background: linear-gradient(135deg, var(--primary), var(--accent));
      display: flex; align-items: center; justify-content: center;
      font-size: 28px; font-weight: 800;
    }
    .profile-username { font-size: 15px; font-weight: 700; margin-bottom: 2px; }
    .profile-id { font-size: 11px; color: var(--text3); }
    .profile-level-badge {
      display: inline-flex; align-items: center; gap: 4px;
      margin-top: 8px; padding: 3px 10px;
      background: var(--primary-dim); border: 1px solid rgba(75,124,255,.25);
      border-radius: 40px; font-size: 12px; font-weight: 700; color: var(--primary);
    }

    .profile-nav-links { padding: 8px 0; }
    .profile-nav-link {
      display: flex; align-items: center; gap: 10px;
      padding: 11px 20px;
      font-size: 14px; font-weight: 500; color: var(--text2);
      border-left: 2px solid transparent;
      cursor: pointer; transition: all .15s;
      text-decoration: none;
    }
    .profile-nav-link:hover, .profile-nav-link.active {
      color: var(--text); background: var(--surface2);
      border-left-color: var(--primary);
    }
    .profile-nav-link__icon { width: 18px; text-align: center; }

    .profile-main { flex: 1; min-width: 0; }

    /* Stats grid */
    .prof-stats-row {
      display: grid; grid-template-columns: repeat(4, 1fr); gap: 16px;
      margin-bottom: 24px;
    }
    .prof-stat {
      background: var(--surface);
      border: 1px solid var(--border);
      border-radius: var(--r-lg);
      padding: 18px 16px; text-align: center;
    }
    .prof-stat__icon { font-size: 24px; margin-bottom: 8px; }
    .prof-stat__val { font-size: 24px; font-weight: 800; letter-spacing: -.03em; margin-bottom: 2px; font-variant-numeric: tabular-nums; }
    .prof-stat__label { font-size: 12px; color: var(--text3); }

    /* Activity list */
    .activity-item {
      display: flex; align-items: center; gap: 14px;
      padding: 12px 0; border-bottom: 1px solid var(--border);
    }
    .activity-item:last-child { border-bottom: none; }
    .activity-icon {
      width: 40px; height: 40px; flex-shrink: 0;
      border-radius: var(--r-sm);
      display: flex; align-items: center; justify-content: center;
      font-size: 18px;
    }
    .activity-icon--case     { background: rgba(75,124,255,.12); }
    .activity-icon--upgrade  { background: rgba(245,158,11,.1); }
    .activity-icon--contract { background: rgba(255,180,84,.1); }
    .activity-icon--battle   { background: rgba(239,68,68,.1); }
    .activity-icon--withdraw { background: rgba(34,197,94,.1); }
    .activity-info { flex: 1; min-width: 0; }
    .activity-title { font-size: 14px; font-weight: 500; }
    .activity-sub   { font-size: 12px; color: var(--text3); }
    .activity-val   { font-size: 14px; font-weight: 700; flex-shrink: 0; }
    .activity-val--pos { color: var(--success); }
    .activity-val--neg { color: var(--danger); }
    .activity-time  { font-size: 11px; color: var(--text3); flex-shrink: 0; text-align: right; }

    /* Profile section card */
    .profile-card {
      background: var(--surface);
      border: 1px solid var(--border);
      border-radius: var(--r-xl);
      padding: 24px;
      margin-bottom: 16px;
    }
    .profile-card__title {
      font-size: 16px; font-weight: 700;
      margin-bottom: 20px; padding-bottom: 16px;
      border-bottom: 1px solid var(--border);
    }

    /* Achievements */
    .achievements-grid {
      display: grid; grid-template-columns: repeat(2, 1fr); gap: 10px;
    }

    /* Settings form */
    .settings-row {
      display: flex; align-items: center; justify-content: space-between;
      padding: 14px 0; border-bottom: 1px solid var(--border);
    }
    .settings-row:last-child { border-bottom: none; }
    .settings-row__left { }
    .settings-row__label { font-size: 14px; font-weight: 500; margin-bottom: 2px; }
    .settings-row__desc  { font-size: 12px; color: var(--text3); }

    /* Tab pills for activity */
    .activity-tabs {
      display: flex; gap: 4px; margin-bottom: 16px;
      background: var(--surface2); padding: 4px; border-radius: var(--r-sm);
      width: fit-content;
    }
    .activity-tab {
      padding: 6px 14px; border-radius: 6px;
      font-size: 13px; font-weight: 500; color: var(--text2);
      cursor: pointer; transition: all .15s;
    }
    .activity-tab.active { background: var(--surface); color: var(--text); box-shadow: 0 1px 4px rgba(0,0,0,.3); }

    @media (max-width: 1100px) { .prof-stats-row { grid-template-columns: repeat(2, 1fr); } }
    @media (max-width: 900px)  { .profile-layout { flex-direction: column; } .profile-sidebar-nav { width: 100%; position: static; } .achievements-grid { grid-template-columns: 1fr; } }
    @media (max-width: 600px)  { .prof-stats-row { grid-template-columns: 1fr 1fr; } }